Board-to-board connector

Abstract

A board-to-board connector according to the present invention includes an insulating housing and a plurality of terminals. The insulating housing has a plurality of terminal grooves, and the electric terminals are accommodated in the terminal grooves. A second receiving portion locates outside the sidewall for accommodating a branch, which is arranged in a base part of the terminal upwardly. Further, the base part protrudes a welding part downwardly exploded outside. When the board-to-board connector is soldered to a printed circuit board, the superfluous tin is guided to the branch and. So that it prevents the superfluous tin from flowing into the contact area of the terminal.

1. A board-to-board connector, comprising:
 an insulating housing having a base plate, a pair of first sidewalls protruding upwards from opposing sides of said base plate, a pair of second sidewalls protruding upwards from said base plate on another opposite sides, a central island portion protruding from the center of the base plate and keeping a certain distance to the sidewalls, a periphery-receiving place formed between said central island portion and said sidewalls, a plurality of terminal grooves arranged at regular intervals along the length of the insulating housing for receiving corresponding electric terminal therein, said terminal groove further having a first receiving portion positioned in said base plate, a second receiving portion extending upwards from said first receiving portion along outside of said first sidewall, a third receiving portion perforating through said first sidewall from said first receiving portion, and a fourth receiving portion extending upwards from said first receiving portion along said central island portion; 
 a plurality of electric terminals accommodated in terminal grooves, having a base part extending in a longitudinal direction and accommodated in said first receiving portion, a welding part extending from said base part at a proximal end in the longitudinal direction and is exposed outside the insulating housing, a branch extending in an upward direction from said base part opposite to an extension direction of the wielding part, said branch accommodated in said second receiving portion, a holding portion extending from base part inserted into said third receiving portion to secure said terminal in said terminal groove, a compression part extending from base part and further formed a touching part exploded in said periphery-receiving place; and 
 wherein no part of the branch extends beyond the wielding part in the longitudinal direction towards the proximal end. 
 
   
   
     2. The board-to-board connector as claimed in  claim 1 , wherein said insulating housing has at least one fitting nail groove in said second sidewall, and at least one fitting nail is accommodated in said fitting nail groove. 
   
   
     3. The board-to-board connector as claimed in  claim 1 , wherein said holding part of said electric terminal further comprising a salient part wedged in said third receiving portion.